Today, when you order "H2O by Sandro Loporcaro (Amazo)", you'll instantly be emailed a Penguin Magic gift certificate. You can spend it on anything you like at Penguin, just like cash. Just complete your order as normal, and within seconds you'll get an email with your gift certificate.

Here's one that crosses the line between illusion and reality. You see everything, so it must be real, right?

Show an empty glass, and then fill it with water or other liquid. Place a large playing card on the top of the glass.

Now turn the glass upside down, with the large playing card still underneath - the card adheres to the glass and doesn't fall to the ground! Remove the card, and the water now remains suspended inside the glass -- this looks incredible! At your magical gesture, the water finally falls down from the glass.